{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:1995:7HNELOROPCQZBR3Y3AM2XILKG7","short_pith_number":"pith:7HNELORO","canonical_record":{"source":{"id":"hep-ph/9510235","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"hep-ph","submitted_at":"1995-10-05T22:10:52Z","cross_cats_sorted":[],"title_canon_sha256":"fa3ed9858effb2ac6b63313b446074d5ecaa3db77584610f770da586ce95512c","abstract_canon_sha256":"5d0ab68fd6b3181e896527be15e61cfe8f1fd257d7624b3d6a0cfbb0d90086e5"},"schema_version":"1.0"},"canonical_sha256":"f9da45ba2e78a190c778d819aba16a37e819102da65b285595e6f1c4d995840c","source":{"kind":"arxiv","id":"hep-ph/9510235","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-ph/9510235","created_at":"2026-05-18T01:39:00Z"},{"alias_kind":"arxiv_version","alias_value":"hep-ph/9510235v2","created_at":"2026-05-18T01:39:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-ph/9510235","created_at":"2026-05-18T01:39:00Z"},{"alias_kind":"pith_short_12","alias_value":"7HNELOROPCQZ","created_at":"2026-05-18T12:25:47Z"},{"alias_kind":"pith_short_16","alias_value":"7HNELOROPCQZBR3Y","created_at":"2026-05-18T12:25:47Z"},{"alias_kind":"pith_short_8","alias_value":"7HNELORO","created_at":"2026-05-18T12:25:47Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:1995:7HNELOROPCQZBR3Y3AM2XILKG7","target":"record","payload":{"canonical_record":{"source":{"id":"hep-ph/9510235","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"hep-ph","submitted_at":"1995-10-05T22:10:52Z","cross_cats_sorted":[],"title_canon_sha256":"fa3ed9858effb2ac6b63313b446074d5ecaa3db77584610f770da586ce95512c","abstract_canon_sha256":"5d0ab68fd6b3181e896527be15e61cfe8f1fd257d7624b3d6a0cfbb0d90086e5"},"schema_version":"1.0"},"canonical_sha256":"f9da45ba2e78a190c778d819aba16a37e819102da65b285595e6f1c4d995840c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:39:00.034036Z","signature_b64":"DLzxueqFj8VWAvSGT7uk2R79lBYockfcHEqDwi5gmB0J/93fUhfmXGgTmhglyIVReLc1jPaORGqOEKWIqJURDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f9da45ba2e78a190c778d819aba16a37e819102da65b285595e6f1c4d995840c","last_reissued_at":"2026-05-18T01:39:00.033281Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:39:00.033281Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"hep-ph/9510235","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:39:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iaEtctX+WRJA1gBOjVnTD8xUhjWBFJiDv6qMVfsmfKHPdcPD6o02HW/lxisuO/Tz6J1zvVKAJP3xfyrZTgsoCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T06:58:35.562362Z"},"content_sha256":"2e79b1c1ab483c5c123c7ff8e3b5d5e5539b481f0202a3f230fc579fa96b8bef","schema_version":"1.0","event_id":"sha256:2e79b1c1ab483c5c123c7ff8e3b5d5e5539b481f0202a3f230fc579fa96b8bef"},{"event_type":"graph_snapshot","subject_pith_number":"pith:1995:7HNELOROPCQZBR3Y3AM2XILKG7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Antiquark Polarization inside the Proton is Small","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Ling-Fong Li, T. P. Cheng","submitted_at":"1995-10-05T22:10:52Z","abstract_excerpt":"Quark contributions to the proton spin as deduced from polarized DIS of leptons off a nucleon target, and the octet baryon magnetic moments, can be used to deduce the antiquark polarizations $\\Delta_{\\overline{q}}$ inside the proton. In this way, the 1992 analysis by Karl is shown to imply $\\Delta_{\\overline{q}}\\simeq 0.$ Such a spin structure fits nicely into the chiral quark interpretation of the proton spin and flavor puzzles."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/9510235","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:39:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"m7ju0vvQEBA2urmlUSXW2xlkL1p4cardBSxVB2m9uqb5t/K6eaXhiCSIRnz1nl1a0pE8iBhJbdqjqaSNT5++BA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T06:58:35.562711Z"},"content_sha256":"b1c97217af6ad8642579e206945860e1ef5c0d0582e9f334e60740d57faeef6e","schema_version":"1.0","event_id":"sha256:b1c97217af6ad8642579e206945860e1ef5c0d0582e9f334e60740d57faeef6e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7HNELOROPCQZBR3Y3AM2XILKG7/bundle.json","state_url":"https://pith.science/pith/7HNELOROPCQZBR3Y3AM2XILKG7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7HNELOROPCQZBR3Y3AM2XILKG7/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-06-07T06:58:35Z","links":{"resolver":"https://pith.science/pith/7HNELOROPCQZBR3Y3AM2XILKG7","bundle":"https://pith.science/pith/7HNELOROPCQZBR3Y3AM2XILKG7/bundle.json","state":"https://pith.science/pith/7HNELOROPCQZBR3Y3AM2XILKG7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7HNELOROPCQZBR3Y3AM2XILKG7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1995:7HNELOROPCQZBR3Y3AM2XILKG7","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"5d0ab68fd6b3181e896527be15e61cfe8f1fd257d7624b3d6a0cfbb0d90086e5","cross_cats_sorted":[],"license":"","primary_cat":"hep-ph","submitted_at":"1995-10-05T22:10:52Z","title_canon_sha256":"fa3ed9858effb2ac6b63313b446074d5ecaa3db77584610f770da586ce95512c"},"schema_version":"1.0","source":{"id":"hep-ph/9510235","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-ph/9510235","created_at":"2026-05-18T01:39:00Z"},{"alias_kind":"arxiv_version","alias_value":"hep-ph/9510235v2","created_at":"2026-05-18T01:39:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-ph/9510235","created_at":"2026-05-18T01:39:00Z"},{"alias_kind":"pith_short_12","alias_value":"7HNELOROPCQZ","created_at":"2026-05-18T12:25:47Z"},{"alias_kind":"pith_short_16","alias_value":"7HNELOROPCQZBR3Y","created_at":"2026-05-18T12:25:47Z"},{"alias_kind":"pith_short_8","alias_value":"7HNELORO","created_at":"2026-05-18T12:25:47Z"}],"graph_snapshots":[{"event_id":"sha256:b1c97217af6ad8642579e206945860e1ef5c0d0582e9f334e60740d57faeef6e","target":"graph","created_at":"2026-05-18T01:39:00Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"Quark contributions to the proton spin as deduced from polarized DIS of leptons off a nucleon target, and the octet baryon magnetic moments, can be used to deduce the antiquark polarizations $\\Delta_{\\overline{q}}$ inside the proton. In this way, the 1992 analysis by Karl is shown to imply $\\Delta_{\\overline{q}}\\simeq 0.$ Such a spin structure fits nicely into the chiral quark interpretation of the proton spin and flavor puzzles.","authors_text":"Ling-Fong Li, T. P. Cheng","cross_cats":[],"headline":"","license":"","primary_cat":"hep-ph","submitted_at":"1995-10-05T22:10:52Z","title":"Antiquark Polarization inside the Proton is Small"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/9510235","kind":"arxiv","version":2},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:2e79b1c1ab483c5c123c7ff8e3b5d5e5539b481f0202a3f230fc579fa96b8bef","target":"record","created_at":"2026-05-18T01:39:00Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"5d0ab68fd6b3181e896527be15e61cfe8f1fd257d7624b3d6a0cfbb0d90086e5","cross_cats_sorted":[],"license":"","primary_cat":"hep-ph","submitted_at":"1995-10-05T22:10:52Z","title_canon_sha256":"fa3ed9858effb2ac6b63313b446074d5ecaa3db77584610f770da586ce95512c"},"schema_version":"1.0","source":{"id":"hep-ph/9510235","kind":"arxiv","version":2}},"canonical_sha256":"f9da45ba2e78a190c778d819aba16a37e819102da65b285595e6f1c4d995840c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f9da45ba2e78a190c778d819aba16a37e819102da65b285595e6f1c4d995840c","first_computed_at":"2026-05-18T01:39:00.033281Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:39:00.033281Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"DLzxueqFj8VWAvSGT7uk2R79lBYockfcHEqDwi5gmB0J/93fUhfmXGgTmhglyIVReLc1jPaORGqOEKWIqJURDw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:39:00.034036Z","signed_message":"canonical_sha256_bytes"},"source_id":"hep-ph/9510235","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2e79b1c1ab483c5c123c7ff8e3b5d5e5539b481f0202a3f230fc579fa96b8bef","sha256:b1c97217af6ad8642579e206945860e1ef5c0d0582e9f334e60740d57faeef6e"],"state_sha256":"41ce0c4dbd649d1de070ee27dbb50343ea3a7ad95a963f9db87bfecc245501cf"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5jnfcpXJ9dINZzdiMb0FAWMGwVFAqHm2QCeWGHQW8be7yFesP1trHk3W17oFX/FHWAo/Vy20QS9RQsX4S7PfCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-07T06:58:35.564623Z","bundle_sha256":"64335c76f906e00c94c6ee69a9d461f3220d9b0a9aad39b77e9cec1b696ca562"}}